I would start by looking at step 0 not step 200. Here you have a huge
VDW
energy. So large that it doesn't fit in the space provided and so is
printed
as stars. This likely means that you have two atoms sitting on top of
each
other. I would take a careful look at your initial starting structure,
particularly in the region of atom 15050 which has an initial force of
over
10^15 KCal/mol/angstrom on it.